Fractional distilation

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What is separated by fractional distillation
Crude oil
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Where does the separation take place?
In a fractional distillation column
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What is done to the crude oil before it enters the column?
It is evaporated
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How does the temperature of the column change as it goes up?
It is cooler at the top and hotter at the bottom
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How does this make distillation happen?
The fractions of crude oil that condense at the highest temperature are piped off as liquids at the bottom and the temperature decreases so the fractions condense as they reach their boiling point, fraction w/ lowest bp is piped off as gas at top.
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How does the size of the molecule effect the boiling point?
The larger the molecule the higher the boiling point(therefore piped off earlier)
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How does the size of the molecule effect the viscosity?
Smaller molecules are more viscous than larger molecules(they flow more easily)
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How does the size of the molecule effect the volatility?
Smaller molecules are more volatile than larger molecules.`
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How does the size of the molecule effect the flammability
Smaller molecules are more flammable than larger molecules.
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What temperature is at the top and bottom of the column?
At the bottom it is 350 degrees C and at the top 25 degrees C
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Other cards in this set

Card 2

Front

Where does the separation take place?

Back

In a fractional distillation column

Card 3

Front

What is done to the crude oil before it enters the column?

Back

Preview of the front of card 3

Card 4

Front

How does the temperature of the column change as it goes up?

Back

Preview of the front of card 4

Card 5

Front

How does this make distillation happen?

Back

Preview of the front of card 5
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